Superoxide of Group I-A element (M) has the formula
Correct answer: C. MO2
- A. M2O
- B. M2O4
- C. MO2
- D. M2O2
Explanation
The oxidation state of superoxide is O2^-½. Hence, the molecular formula will be MO2, where M is M^+1 and O is O^-½. For example, potassium superoxide (KO2.)
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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